Contract the abdominal muscles for 10 seconds and continue to breathe deeply. You can progress this exercise by bracing the core and slowly lifting your right leg to 90 degrees in front of the body. Continue to alternate.
Assume an all-fours position, with hands shoulder-width apart and knees hip-distance apart. Brace the core and extend your right leg behind you. Keep the foot level with the hip. Next, extend your left arm forward with the thumb facing upward. Keep the hand level with the shoulder. Hold and repeat on the opposite side.